It includes several major items: positioning guidance and automatic assembly, that is, tell the implementer such as robot to go to where to get what things and where to put them; defect detection, that is, to detect a variety of defects in the product, such as the size, location, presence or absence of damage, etc.; measurement, that is, the geometric shape of the target object Measurement; recognition, that is, to recognize the content of the object, such as one-dimensional code two-dimensional code, character text, etc.; these technologies are widely used in industry (product quality), military (missile guidance), medical (physiological reproduction) and other fields!